Question

I am trying to panTo an area on a map on click. The script is not working and page reloading. Perhaps someone can see the problem.

My function

function clickroute(lati,long) {

       map = google.maps.Map(document.getElementById("map_canvas"));
      map.panTo(lati,long)
  }

And the rest

var directionDisplay;
  var directionsService = new google.maps.DirectionsService();
  var map;

  function initialize() {
      geocoder = new google.maps.Geocoder();
    directionsDisplay = new google.maps.DirectionsRenderer();
    var chicago = new google.maps.LatLng(41.850033, -87.6500523);
    var myOptions = {
      zoom:10,
      mapTypeId: google.maps.MapTypeId.ROADMAP,
      center: chicago
    }
    map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);

    var address = 'virginia water';
    geocoder.geocode( { 'address': address}, function(results, status) {
      if (status == google.maps.GeocoderStatus.OK) {
        map.setCenter(results[0].geometry.location);
        var marker = new google.maps.Marker({
            map: map, 
            position: results[0].geometry.location
        });
      } 
    });
    directionsDisplay.setMap(map);
  }

  function calcRoute() {
    var start = document.getElementById("start").value;
    var end = document.getElementById("end").value;
    var request = {
        origin:start, 
        destination:end,
        travelMode: google.maps.DirectionsTravelMode.DRIVING
    };
    directionsService.route(request, function(response, status) {
      if (status == google.maps.DirectionsStatus.OK) {
        directionsDisplay.setDirections(response);
      }
    });
  }

And my event

<a href="" onclick="clickroute(51.433373, -0.712251)">test</a>

Answer 1

The issue is that your using map.panTo(latitude,longitude) but the google maps API uses this: panTo(latLng myLatLng) where latLng is a google map class.

try something like this (untested)

function clickroute(lati,long) {
      var latLng = new google.maps.LatLng(lati, long); //Makes a latlng
      map.panTo(latLng); //Make map global
  }

Look here for more info.

EDIT
As someone else stated you don’t want to remake a new map. Maybe its easier to make it global?